Lake Bluff
Illinois, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Lake Bluff, IL

Ocean temperature

In July, the average ocean temperature in Lake Bluff, Illinois, is 70.3°F (21.3°C).
Note: Swimming in 70.3°F (21.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

In Lake Bluff, the average length of the day in July is 14.9h.

How cold is the water in July in Lake Bluff?

In Lake Bluff, the average seawater temperature in July is 70.3°F (21.3°C). Swimming in 70.3°F (21.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Lake Bluff have in July?

The average length of the day in July is 14.9h.
Average sea temperature in July - Lake Bluff, IL
  • Average sea temperature in July: 70.2°F

The best month for swimming (with the highest average sea temperature) is August (73.3°F).
The coldest month (with the lowest average sea temperature) is February (37.1°F).

Average daylight in July - Lake Bluff, IL
  • Average daylight in July: 14.9h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).